Handling Refrigerant For Dismantling And Repairs; Compressor And Motor; Condensers And Evaporators; Table 15 - Approximate Refrigerant And Water Weight - York YZ MODEL A Operation And Maintenance Manual

FORM 161.01-OM1
ISSUE DATE: 6/8/2018
HANDLING REFRIGERANT FOR
DISMANTLING AND REPAIRS
If it becomes necessary to open any part of the refriger-
ant system for repairs, it will be necessary to remove
the charge before opening any part of the unit. If the
chiller is equipped with optional valves, the refrigerant
can be isolated in either the condenser or evaporator /
compressor while making any necessary repairs.

TABLE 15 - APPROXIMATE REFRIGERANT AND WATER WEIGHT

EVAPORATOR
FB2910
FB2912
FA3312
FA3312
FA3314
FA3314
FA3914
FA3916
FA4816
FA4816
FB4818
FB5618
*Refrigerant Weight based on maximum tube bundle.
** Water Weight is the total water in both shells and for 150PSI, 2-pass, compact water boxes.

CONDENSERS AND EVAPORATORS

General
Maintenance of condenser and evaporator shells is im-
portant to provide trouble free operation of the chiller.
The water side of the tubes in the shell must be kept
clean and free from scale.
The major portion of maintenance on the condenser
and evaporator will deal with the maintaining the water
side of the condenser and evaporator in a clean condi-
tion.
The use of untreated water in cooling towers, closed
water systems, etc. frequently results in one or more of
the following:
JOHNSON CONTROLS

COMPRESSOR AND MOTOR

1. Check mounting screws and piping joint nuts fre-
2. Test motor windings annually to check for dete-
Electrical test of motor winding resistance should be
performed by a qualified service technician because
it involves determination of power leads between the
motor and the VSD. Results from these winding insu-
lation resistance tests should be trended each interval
to determine degradation in motor windings.
REFRIGERANT WEIGHT
CONDENSER
CA2110
SA2512
SA2512
SA2512
SA3314
SA3314
CA3314
SA3916
SA3916
CA3916
SA4418
SS4418
1. Scale Formation
2. Corrosion or Rusting
3. Slime and Algae Formation
It is therefore to the benefit of the user to provide for
proper water treatment to provide for a longer and
more economical life of the equipment. The following
recommendation should be followed in determining
the condition of the water side of the condenser and
evaporator tubes.
SECTION 5 - MAINTENANCE
quently to insure tightness.
rioration of windings.
WATER WEIGHT LBS
LBS (KG)*
579 (263)
746 (339)
770 (350)
869 (395)
1177 (535)
1302 (592)
1751 (796)
2105 (957)
2451 (1114)
2779 (1263)
3291 (1496)
3577 (1626)
5
(KG)**
1375 (625)
1870 (850)
2035 (925)
2035 (925)
3520 (1600)
4125 (1875)
4015 (1825)
5665 (2475)
6820 (3100)
6765 (3075)
8635 (3925)
9680 (4400)
125